duanlao6573 2018-08-09 15:45
浏览 34
已采纳

将结构放入切片时出现golang错误

Full code:

   package main

    import (
        "net"
    )

    var arrayOfConnections []*Connection

    type Connection struct {
        conn net.Conn
        id   int
    }

    func main() {
        serv, _ := net.Listen("tcp", ":8080")
        defer serv.Close()
        connectionHandle(serv)
    }
    func connectionHandle(serv net.Listener) {
        conn, _ := serv.Accept()
        arrayOfConnections = append(&Connection{conn, 1}, 0)
        conn.Write([]byte("one"))
        conn.Close()
    }

have an error:

first argument to append must be slice; have *Connection

error in this part of code:

arrayOfConnections = append(&Connection{conn, 1}, 0)

I'm new to Golang and it is really hard to figure out what am I doing wrong. How to rewrite the code so the new connection will be finally append to the slice? Couldn't find the answer on stackoverflow. Hope someone could help. Thank you.

  • 写回答

1条回答 默认 最新

  • dongliao1948 2018-08-09 16:30
    关注

    The append should be like this

    arrayOfConnections = append(arrayOfConnections, &Connection{conn, 1})
    

    The append builtin function follows the signature

    func append(s []T, vs ...T) []T
    

    When s is the slice you want to append and vs are the elements you want to append to s, and then de function returns a new slice with all the elements appended.

    本回答被题主选为最佳回答 , 对您是否有帮助呢?
    评论

报告相同问题?

悬赏问题

  • ¥15 打开软件提示错误:failed to get wglChoosePixelFormatARB
  • ¥30 电脑误删了手机的照片怎么恢复?
  • ¥15 (标签-python|关键词-char)
  • ¥15 python+selenium,在新增时弹出了一个输入框
  • ¥15 苹果验机结果的api接口哪里有??单次调用1毛钱及以下。
  • ¥20 学生成绩管理系统设计
  • ¥15 来一个cc穿盾脚本开发者
  • ¥15 CST2023安装报错
  • ¥15 使用diffusionbert生成文字 结果是PAD和UNK怎么办
  • ¥15 有人懂怎么做大模型的客服系统吗?卡住了卡住了